Jackson, Tenn., police found 43-year-old Karen Mullins dead at her home late Sunday after her twin sister in Louisville asked police to check on her.

Jackson police said Caleb Lawrence Mullins was found with Karen Mullins' vehicle early Monday outside a roller skating rink in Louisville. Jackson police traveled to Louisville and questioned the teenager, then issued a news release saying they believed Mullins was stabbed by her nephew on Saturday and expect to charge him.

Police said Karen Mullins moved to Jackson from Louisville in March and Caleb Mullins followed in October.

Israeli Prime Minister Benjamin Netanyahu warned Tuesday that a proposed agreement between world powers and Iran was "a bad deal" that would not stop Tehran from getting nuclear weapons -- but would rather pave its way to getting lots of them and lea...